Guys I am new to this forum. I have been doing some research and would like to know yalls opinion. I have a 2006 Chevy Z71 with the L33 in it right now. I am having problems wiht the engine and am thinking about replacing it. I would like to put a 6.0L lq9 in it since I have read that it is a direct swap for a 5.3 all I would need is the long block and a tune. I this a good idea or would it be better to just put an L33 back in it?
Great idea no replacement for displacement. /thread
ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06
waiting to go in... 3.90s, 214/220cam
Will the weight difference betweent the two be an issue?
Only Avery small difference and power to weight will greatly favor power.Originally Posted by gottahunt247
ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06
waiting to go in... 3.90s, 214/220cam
If the L33 has the 243/799 heads, keep them and bolt them to the LQ9.
"ALisSa1 Silverado"1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60EScrimpin Ain't Easy( . Y . )
+1 up the compression and make that thing fly. Actually on second thought LQ9 has flat tops and is already 10:1 add the smaller combustion chambers on the 243s almost 11:1 you might be a little high on pump gas and idk about ptv issues should be safe. Throw an LS6 cam in there and bam iron LS2.
Last edited by kerrige; 11-07-2012 at 07:14 PM.
ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06
waiting to go in... 3.90s, 214/220cam
I just replaced my spark plugs not to long ago so they are fairly new. Will they swap over to the 6.0 as well or is the gap different?
L33 was just an Alum block with flat top pistons and 862/706 heads.
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
I have a 2005 L33 with factory 799.
Sorry for my bad English I'm french!
Is the flex plate the same for both engines?
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